Another challenging logic puzzle by Wrenware. The game: a square grid of lighted buttons. Choose difficulty level from easy (9 lighted buttons in a 3x3 grid) to most difficult (64 lighted buttons in an 8x8 grid). Each button pressed toggles on or off a set of lights. The challenge: Press the buttons in the correct combination to turn off all those lights! Music and sound effects. Uses A/Pay.